Prosthodontics L10 - support and retention

Question 1

resistance to vertical load (occlusal forces during function) directed through denture to underlying mucosa. the force transmitted through the removeable prostheseis is ultimately resisted by bone - the above statement is the definition of what

Answer 1

support

Question 2

support for the removable prosthesis can be achieved through the use of teeth, what is the name given to this support

Answer 2

tooth-borne support

Question 3

support for the removable prosthesis can be achieved through the use of mucoperiosteum, what is the name given to this support

Answer 3

mucosa-borne support

Question 4

support for the removable prosthesis can be achieved through the use of teeth and mucoperiosteum, what is the name given to this support

Answer 4

tooth/mucosa borne support

Question 5

what type of support is gained from this saddle

Answer 5

mucosal support gained from saddles and connectors

Question 6

is there more tooth support or mucosal support gained from this partial denture

Answer 6

more mucosal support

Question 7

tooth support is gained through use of

Answer 7

periodontal ligaments

Question 8

what directional force are we wanting to apply to tooth with a denture

Answer 8

vertical force

the force is transmitted through tooth to periodontal ligament and ultimately to the underlying bone

Question 9

what type of support is offered through a occlusal/cingulum rests and what directional force is applied

Answer 9

tooth support is offered through the use of cocclusal/cingulum rests, these rests apply vertical directional force.

Question 10

where would an occlusal rest sit on the tooth

Answer 10

on the marginal ridge

Question 11

what must be done to this tooth to favor the vertical force

Answer 11

cutting a small seat on the palatal/lingual aspect creates a cingulum rest which then favours vertical force

Question 12

can onlays provide tooth support

Answer 12

yes they do. they are only used if there is significant wear on a tooth

Question 13

overdenture abutments should sit how many milimetres above the gingival margin

Answer 13

1mm

Question 14

connectors like this lingual plate offer support how?

Answer 14

they rest over a broad area over multiple teeth

Question 15

with bounded saddles where would you expect the majority of the support to come from

Answer 15

tooth support

Question 16

with free end saddles where would you expect the support to come from

Answer 16

combination of tooth and mucosa support

Question 17

large saddles or full dentures where would you expect the support to come from

Answer 17

mucosa borne support

Question 18

if the patient ate toffee and the saddle was to lift up, would there be much indirect retention available?

Answer 18

no there wont be much indirect retention

Question 19

this clasp would allow rotation of the saddles if force was applied. what could you add to the denture to offer some indirect retention

Answer 19

cummer arms

Question 20

what could you do this denture to offer more indirect retention or prevention of bracing

Answer 20

place a lingual plate

Question 21

how would you improve the indirect retention here

Answer 21

by chaning the direction of the clasps, changes the axis to more mesial

Question 22

saddles can provide what of the following

retention

support

indirect retention

bracing

Answer 22

Question 23

connectors can provide what of the following

retention

support

indirect retention

bracing

Answer 23

Question 24

clap can provide what of the following

retention

support

indirect retention

bracing

Answer 24

Question 25

rests can provide what of the following

retention

support

indirect retention

bracing

Answer 25